1973, Progress in Electronics, 11c multicolored, top sheet margin single with vermilion and olive (litho) omitted, full OG, NH, VF, C.v. $800 (Image)

2012, View of Lancaster County, PA, $1.05 multicolored, bottom left corner sheet margin plate No.S11111 vertical pair, die cutting omitted on front, perfect quality, backing paper intact, VF, C.v. $700 (Image)

PIONEER FLIGHT COVERS - CHARLES A. LINDBERGH (1902-74) INAUGURATING FIRST FLIGHT COVER WITH HIS AUTOGRAPH: April 15, 1926, Illustrated First Flight Contract Air Mail (CAM-2) Cover on line Chicago - St. Louis, posted into the mail in Springfield, IL on return flight, franked by five stamps, two nice impressions of violet flight cachet, Chicago ''Apr.15.9:30pm.1926'' machine arrival ds on reverse, signed at the bottom left corner, mostly VF (Image)

AROUND THE WORLD IN EIGHT: June 23-July 1, 1931, cover delivered by Record "Winnie Mae" Flight by pilot Wiley Post and navigator Harold Gatty (signed by them at the top), started from Roosevelt Field at Mineola, NY with 14 transit points including Berlin, Moscow, Omsk, Novosibirsk, Irkutsk, Blagoveschensk, Khabarovsk and etc., two violet Dobroliot markings were applied, Mineola "Jul.1.1931" arrival ds is alongside and on reverse, VF and scarce (Image)

1894-95, Numerals, 2c deep claret, perforation 12, printed on paper without watermark, full OG, close to VF, C.v. $240 (Image)

1959, Numerals, 6c carmine rose and black, vertical pair, bottom stamp with missing ''6 cents'', full OG, NH, mostly VF, C.v. $700 (Image)

1922, Motorcycle Delivery, 10c gray violet, perforation 11, left sheet margin plate No. 17242 block of six (2x3), perfect condition, full OG, NH, mostly VF, C.v. $800 (Image)

1927, Motorcycle Delivery, 10c gray violet, horizontal pair imperforated between stamps, full OG, NH, F/VF, C.v. $575 (Image)

1890, Jefferson, 30c black, nicely preserved example, full OG, NH and fine stamp, C.v. $850 (Image)

1893, Columbian Exposition issue, 1c-$5, complete set of 15 plate proofs on card, nice margins all around, slight rose ink soiling on reverse of 50c, fresh and nice, no gum as produced, VF, C.v. $2,110 (Image)

1893, Columbians, 2c brown violet, jumbo margins and post office fresh, full OG, NH, VF, C.v. $31 (Image)

1893, Columbians, 2c brown violet, right sheet margin imprint block of four, nicely centered, full OG, NH, VF, C.v. $124++ (Image)

1901, Pan-American Exposition, 1c green and black, 2c carmine and black, two top sheet margin horizontal strips of six, each one has two plate No., arrow and imprint, nice and fresh, full OG, NH, F/VF (at least four stamps are VF),C.v. $570 as two plate strips for each value (Image)

1902-03, definitive issue, 1c-$5, complete set of 14 small die proofs on wove paper, removed from the President Roosevelt presentation album, four proofs with some faults (3c, 13c, $2 and $5), usual paper waves, fresh quality otherwise, no gum as produced, VF appearance of this rare proofs, only 85 complete sets possible, C.v. $4,275 (Image)

1903, Franklin, 1c bluish green, top sheet margin horizontal plate No. strip of five with imprint, perfect condition, full OG, NH, three left stamps with premium centering, VF/XF, C.v. $150++ (Image)

1913, Panama-Pacific Exposition, 5c blue, perforation 12, perfectly centered, full OG, NH, XF, C.v. $150 for very fine centering (Image)

1917, Washington, 5c rose, two error values in center of 12-stamp block, fresh condition, full OG, NH (both errors and five stamps of 2c) or LH/hinged, F/VF, C.v. $1,200 as hinged (Image)

1918, Franklin, $2 orange red and black, top sheet margin horizontal plate No's strip of four with arrow in the middle, perfect quality item, full OG, NH, (two right stamps with excellent centering), F/VF+, C.v. $4,400 as singles (Image)

1918, Franklin, $5 deep green and black, top sheet margin horizontal plate No's strip of four with arrow in the middle, post office fresh, full OG, NH (hinged on margin only), F/VF, C.v. $1,360 as singles (Image)

1920, Washington, 2c carmine, offset printing, type IV, top sheet margin plate No.10896 block of six (3x2), full OG, NH, VF, C.v. $450 (Image)

1938, Presidential issue, ½c-$5, complete set of 32, plate No. blocks of four, post office fresh quality, full OG, NH, mainly VF, C.v. $671 (Image)

1938, Presidential issue, $1 purple and black, block of four imperforated horizontally, nice and post office fresh, full OG, NH, VF, penciled position No.67-68/77-78 are on reverse, C.v. $2,200++ (Image)

1942, American Eagle, 3c reddish purple, error of color, pre-cancelled ''Fremont, Ohio'', fresh condition, F/VF, PSAG certificate, C.v. $1,500 (Image)

1959, San Martin 4c blue, left sheet margin horizontal pair imperforated between stamps, perforation at left shifted to the right as always exists, full OG, NH, VF, only 20 pairs recorded, C.v. $900 (Image)

1969, Professional Baseball, (6c) multicolored, black (engraved) color omitted, full OG, NH, VF, C.v. $500 (Image)